B_2O_3对Ca[(Li_(1/3)Nb_(2/3))_(0.95)Zr_(0.15)]_(3+δ)陶瓷微波介电性能的影响  

Influence of sintered aid B2O3 on microwave dielectric properties of Ca [(Li_(1/3)Nb_(2/3))_(0.95)Zr_(0.15)]_(3+δ) ceramics

作　　者：熊钢[1] 周东祥[1] 龚树萍[1] 

机构地区：[1]华中科技大学电子科学与技术系

出　　处：《华中科技大学学报（自然科学版）》2007年第4期63-65,共3页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：国家高技术研究发展计划资助项目(2001AA-ZB3201-02);湖北省科技攻关计划资助项目(2004AA102A01);咸宁学院重点项目(KL0525)

摘　　要：研究了B2O3对陶瓷的烧结性能及微波介电特性的影响．结果表明B2O3的掺入能使Ca[（Li1/3Nb2／3）0.95Zr0.15]3＋δ（CLNZ）陶瓷体系的烧结温度降低160-210℃，谐振频率温度系数τf随B2O3掺入量增加，但烧结温度对其没有明显影响，在990℃，掺入质量分数为1．0％的B2O3，陶瓷微波介电性能最佳．ετ=33．1，Qf=13700GHz，τf=-6．8×10^-6／℃；而且，掺入2．0％的B2O3，在940℃烧结4h，能获得介电性能良好的陶瓷，其ετ=31．4，Qf=8700GHz，τf=-5．2×10^-6／℃．The effects of the B2O3 on the sinterability and microwave dielectric properties of Ca[（Li1/3 Nb2/3）0.95 Zr0.15]3＋δ （CLNZ） ceramics were investigated. B2O3 doping can effectively reduce sintering temperature by 160-210℃. The temperature coefficient of resonator frequency （τf） increased with B2O3 content, but not changed drastically with sintering temperature sintering temperature. When the B2O3 of 1.0 % were added, the optimum microwave dielectric properties. ετ=33.1, Qf=13 700 GHz and τf=-6.8×10^-6/℃ were obtained at the sintering temperature of 990 ℃. Furthermore. CLNZ specimens with 2.0 % B2O3 sintered at 940 ℃ for 4h showed good microwave dielectric properties of ετ=31.4, Qf=8 700 GHz and τf=-5.2×10^-6/℃.

关 键 词：Ca[(Li1/3Nb2/3)0.95Zr0.15]3+δ陶瓷 低温烧结 三氧化二硼 微波介电特性 

分 类 号：TQ174[化学工程—陶瓷工业] O482.4[化学工程—硅酸盐工业]